LITHOSTRATIGRAPHY AND SUBSURFACE GEOLOGY OF THE ALBIAN ROCKS OF SOUTH IRAQ

Abstract

The Nahr Umr Formation is argued here to be in physical and possible chronological continuity with the exposed Rutbah Sandstone Formation of Western Iraq. This stratigraphic relation is postulated on the basis of subsurface mapping. The presently available information, i.e. lithofacies data, well logs, petroleum occurrences, and structural traps availability were evaluated in order to present a preliminary prospect evaluation. It appears that the Albian petroliferous belt coincides with: a marginal‐marine environment of deposition, a sand/shale ratio of > 1 < 8, and a Cretaceous growth of structural traps. Copyright © 1981, Wiley Blackwell. All rights reserved